A comprehensive energy model and energy-quality evaluation of wireless transceiver front-ends

Abstract

As CMOS technology scales down, digital supply voltage and digital power consumption goes down. However due to dynamic range limitations, power supply and power consumption of the RF front-ends and analog sections do not scale in the same fashion. In fact, in scaled systems, the RF section of a wireless transceiver consumes more energy than the digital part. For better understanding of the design trade offs, we first develop an accurate and comprehensive energy model for the analog front-end of wireless transceivers. Next, we evaluate a single user point-to-point wireless data communication system and a multi-user CDMA based system with respect to RF front end energy consumption and communication quality. We demonstrate the effect of occupied signal bandwidth, peak-to-average ratio (PAR), symbol rate, constellation size, and pulseshaping roll-off factor on single user system, and the effect of number of users and multiple access interference (MAI) on CDMA based multi-user system. For a given quality specification, we show how the energy consumption can be reduced by adjusting one or more of these parameters.

A cross-layer optimization design for implanted BAN communication system

“…;L--* r---r ---ffi--r In wireless communication system, RF front-end need to process analog signal working at high frequency, the energy consumption of the RF front-end has the largest share and complex structure [9], therefore, it is essential to analysis the 397 energy consumption of the RF front end, in order to minimize the total energy consumption. We use the standard wireless transmitter and receiver model with MQAM modulation from [10] as described in Figure. …”

“…For instance, if suppose d=0.2m, we fmd that the minimum energy consumption is at duty cycle T, alio =0.2 which means the ratio between active time and sleep time is 1 :4. According to (10), if duty cycle T, alio =0.2 is chosen, the total energy consumption E total =2.8mJ.…”

A Low-Complexity PTS-based PAPR Reduction Technique for OFDM Signals without Transmission of Side Information

“…6 and P tran and P rec are the estimated values obtained after the synthesis of the corresponding circuits. Furthermore it should be taken into account that the power consumption of the transmitter DAC and of the receiver ADC is also reduced when the PAPR of the transmitted signal decreases [17]. In order to evaluate the application of the proposed PTS decoding algorithm and the total power savings due to the application of PTS in the complete system that comprises a transmitter and a receiver, this paper focuses on a real-world system, considering the European standard DVB-T for digital TV.…”

“…Taking into account the power consumption of the proposed architecture in the transmitter, the power consumption of the proposed decoder, and the resulting reduction in the power consumption of PA due to PAPR reduction, the total system-level power consumption decreases by up to 18%. It should be noted that PAPR reduction also reduces the power consumption of digital-to-analog (DAC) and analog-to-digital (ADC) converters employed in the transmitter and receiver respectively [17], but these effects are not taken into account in this paper.…”

Adaptive Modulation and Power Control for Energy Efficient Video Transmission over Fading Channels

“…In order to minimize the total energy consumption for video transmission, it is essential to consider the energy consumption of the RF front-end. We use the standard wireless transmitter and receiver model from [7] as described in Fig. 1.…”